Mousa Kabellan is a 15-year-old Jewish boy who has secretly converted to Islam. In his notebook published online, he recounts his feelings during his first Ramadan as a Muslim, which he is concealing from his family and friends. He faces many obstacles in fasting and praying while attending a Jewish school and dealing with Jewish holidays that require eating. Through it all, he remains determined to fulfill his religious duties despite the difficulties of concealing his new faith.